Abstract
As a nondestructive investigation method of soil structure, the radar method was developed in this study. Although the ground penetrating radar has been used as a geophysical investigation, the method is not effective for the homogeneous soil structure. To improve the efficiency of the method, the concept of impact echo method for concrete structure was applied to the radar method. The newly developed method was verified for the laboratory test. Then, the field measurement was carried out for the embankment of irrigation tank. It was found that the proposed method was effective to examine the water content distribution and roughly location of water table.
